作者:Víctor Santes、Elizabeth Gómez、Rosa Santillan、Norberto Farfán
DOI:10.1055/s-2001-10810
日期:——
The synthesis of four chiral N,N'-substituted piperazines stereoselectively labelled with deuterium atoms is described. The preparation was accomplished by reduction of norephedrine derived bisoxazolidines with LiAID, or BD,*THF to afford 2,3-d2-piperazine and 2,3-dimethyl-2,3-d2-piperazine, while 2,2,3,3-d4and 2,2,3,3,5,6-d,-piperazine were obtained from a strategically deuterated hydroxyethylenediamine
描述了用氘原子立体选择性标记的四种手性 N,N'-取代哌嗪的合成。通过用 LiAID 或 BD,*THF 还原去甲麻黄碱衍生的双恶唑烷来完成制备,得到 2,3-d2-哌嗪和 2,3-二甲基-2,3-d2-哌嗪,而 2,2,3,3 -d4 和 2,2,3,3,5,6-d,-哌嗪是使用相同的路线从策略性氘代羟基乙二胺前体获得的。在所有情况下,双恶唑烷的氘化以反式立体选择性进行。